Find the Greatest Common Factor of the Expressions $7 ( x - 4 ) ^ { 2 }$

Multiple Choice

Find the greatest common factor of the expressions $7 ( x - 4 ) ^ { 2 }$ and $7 ( x - 4 ) ^ { 3 }$ .

A) $7 ( x - 4 ) ^ { 2 }$
B) $49 ( x - 4 ) ^ { 3 }$
C) $49 ( x - 4 ) ^ { 5 }$
D) $7 ( x - 4 ) ^ { 3 }$
E) $49 ( x - 4 ) ^ { 2 }$